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mf1=mf1|651|GUNTHORPE FORMATION|POLYGON((-1.2 52.5,-1.2 52.6,-1.1 52.6,-1.1 52.5,-1.2 52.5))|gu.25699|200|Y
mf2=mf2|269|MERCIA MUDSTONE GROUP|POLYGON((-1.3 52.5,-1.3 52.6,-1.2 52.6,-1.2 52.5,-1.3 52.5))|gu.25678|100|Y
mf3=mf3|123|CLIFTON FORMATION|POLYGON((-1.2 53.5,-1.2 53.6,-1.1 53.6,-1.1 53.5,-1.2 53.5))|gu.25678|150|Y
mf4=mf4|456|MURRADUC BASALT|POLYGON((-1.3 53.5,-1.3 53.6,-1.2 53.6,-1.2 52.5,-1.3 53.5))|gu.25682|120|Y